Article continues below advertisementKeith Urban surprised guests at Mar-a-Lago when he hit the stage and belted out Chappell Roan's "Pink Pony Club."Article continues below advertisementThe performance went down on Saturday, November 15, during an event hosted by Australian billionaire Anthony Pratt. Florida realtor Tali Israel shared clips from the lavish gathering, giving everyone an inside look at Nicole Kidman's estranged husband lighting up the room.Article continues below advertisementSource: @tali.